|
Problem IC68061
|
Status: Geschlossen |
INCORRECT CARIDNALITY ESTIMATE WHEN MORE THAN ONE EQUALITY LOCAL PREDICATES ON A TABLE THAT ARE FULLY QUALIFIED IN UNIQUE INDEX |
| Produkt: |
DB2 FOR LUW / DB2FORLUW / 980 - DB2 |
| Problembeschreibung: |
When there is a table that has a primary key index, and
the query references all the columns in the primary or unique
index, as local equality predicates, the optimizer does
not consider column group statistics or keycard information from
the index, and rather treats the predicates independent
of each other. |
| Problem-Zusammenfassung: |
When there is a table that has a primary key index, and
the query references all the columns in the primary or unique
index, as local equality predicates, the optimizer does
not consider column group statistics or keycard information
from
the index, and rather treats the predicates independent
of each other. |
| Local-Fix: |
collecting distribution statistics may help alleviate
the problem. |
| verfügbare FixPacks: |
DB2 Version 9.8 Fix Pack 4 for AIX and Linux
DB2 Version 9.8 Fix Pack 5 for AIX and Linux
|
| Lösung |
module engn_sqno
fixed >= v98 fpk4 |
| Workaround |
collecting distribution statistics may help alleviate
the problem. |
| Weitere Daten |
Datum - Problem gemeldet :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
| 20.04.2010
08.08.2011
08.08.2011 |
| Problem behoben ab folgender Versionen (IBM BugInfos) |
9.8.FPk4
|
| Problem behoben lt. FixList in der Version |
| 9.8.0.4
|
 |
